Fense Proxy & VPN Blocker <= 3.0.1 - Missing Authorization to Unauthenticated Plugin Option/Transient Deletion via fense_bpvt_save_settings AJAX Action
The Fense Proxy & VPN Blocker plugin for WordPress is vulnerable to unauthorized modification of data due to a missing capability check and missing nonce validation on the fense_bpvt_save_settings() function in versions up to, and including, 3.0.1. The callback is registered to both wp_ajax_* and wp_ajax_nopriv_* hooks and unconditionally calls delete_option() on four plugin options and delete_transient() on three transients tied to the plugin's API key cache and settings. This makes it possible for unauthenticated attackers to delete plugin options and transients, effectively resetting the plugin's API key/data cache and forcing the plugin to refetch state.
Affected software
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| Platform | Package | Vulnerable versions | Fixed in |
|---|---|---|---|
| WordPress plugin | Fense Block Vpn & Proxy | <= 3.0.1 | 3.0.2 |
References
- CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N- Weakness (CWE)
CWE-862- Platform
- WordPress
- Package
Fense Block Vpn & Proxy- Disclosed
- 16.07.2026
- Updated
- 11.10.2026 10:22
Sources and licenses
Wordfence Intelligence - 1208ac78-4a56-4daa-b935-d579f07f8e8e - Wordfence Intelligence
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Vulnerability history: Fense Block Vpn & Proxy
All published vulnerabilities of this package (WordPress plugin), newest first. Shows whether this is a one-off slip or a package that needs watching.
This is the only known vulnerability of this package.
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